(19)

(11)

EP 3 984 199 A1

(12)

(43) Date of publication: 20.04.2022 Bulletin 2022/16 (21) Application number: 20729348.1 (22) Date of filing: 06.05.2020

(51) International Patent Classification (IPC):  H04L 29/08(2006.01) H04L 12/803(2013.01) (52) Cooperative Patent Classification (CPC): H04L 47/125; H04L 67/1002; H04L 67/1027 (86) International application number: PCT/US2020/031540 (87) International publication number: WO 2020/256844 (24.12.2020 Gazette 2020/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 18.06.2019 US 201962863018 P 09.12.2019 US 201916708259 (71) Applicant: Microsoft Technology Licensing, LLC Redmond, WA 98052-6399 (US)	(72) Inventors: AGARWAL, Abhishek Redmond, Washington 98052-6399 (US) GARG, Mohit Redmond, Washington 98052-6399 (US) BANSAL, Sandeep Redmond, Washington 98052-6399 (US) JAIN, Ashish Redmond, Washington 98052-6399 (US) (74) Representative: Grünecker Patent- und Rechtsanwälte PartG mbB  Leopoldstraße 4 80802 München 80802 München (DE)